Unfortunately everything is fully up to date, a weird problem indeed. Native Access also doesn't list anything as being broken.
But I might be onto something: are you guys using Massive as VST3 or VST2? Because I took a look at the project file using a hex editor and I noticed the following: "Native Instruments:VST3:INSTR:5653544E694D616D6173736976650000Massiveû    ï VST3", whereas I'm using VST2's.
Either way, I'm starting to wonder if this couldn't have been self-inflicted afterall, so I'm re-installing Massive just to see what happens. Thanks for trying this out as well!
(update)
@Jeremy_NI & @Matt_NI Thanks again for the feedback and help, I figured it out & fixed it!
As it turned out the VST3 part of Massive got removed on my end. However, for some reason this wasn't detected by Native Access, which strikes me as a bit odd because it does always notice when I remove any 32bit versions of the plugins. And because I only use the VST2 versions of the software I never noticed this, until now.
So... I just experimented a bit with the expansion and I can't help wonder if there isn't a small bug with some of the demo projects, in specific "Lunar Ray" and "A Superexposed Circuit"?
As soon as I load either of these two projects then I get an error message stating that "Massive couldn't be loaded", see my screenshot above. However, Massive is normally available to me, if I try to manually load Massive onto a sound then I have no problem at all, not even when I try to use some of the presets within this expansion:
Making me wonder if this could be caused by a small bug somewhere?
Is your Massive up to date?
@Jeremy_NI Could that be the same issue we see on Maschine Plus with the Massive version?
Hey @ShelLuser I've tested these projects and they seem to load without an issue. Just make sure you have updated Massive to 1.5.9.